I have a drop down menu on this development Wordpress site: http://zap2dev.redzephyr.biz/ the mobile menu appears to be working fine however upon pressing the mobile menu icon the menu displays and promptly the page begins reloading. Obviously on reload the mobile menu is collapsed again so begins the vicious cycle.

Try making your toggle not a link and instead a div. Otherwise with javascript assign on click or touch to prevent.default which would cause the browser from trying to open the link which doesn't have an assigned href and reloads the page.